Stratification
From Wikipedia, the free encyclopedia
Stratification is the building up of layers, and can have several variations of meaning:
- Social stratification, is the dividing of a society into levels based on wealth or power.
- Stratification in archaeology is the formation of layers (strata) in which objects are found.
- Stratification of rock layers (strata) is part of the geologic field of Stratigraphy.
- Stratification (botany), where seeds are pretreated to simulated winter conditions so that germination may occur.
- See stratified sampling for the use of stratification in survey sampling. The term "stratified sampling" is also refers a method of variance reduction in Monte Carlo methods.
- In logic, stratification is a layering of predicate symbols to guarantee unique interpretations and to avoid paradoxical definitions like Russell's paradox.
- Stratification is a separate meaning as applied to manifolds, and singularity theory, of a decomposition into pieces with specified relationships on fitting together.
- In music stratification is a layering of musical texture or the independent operating of more than one parameter simultaneously (see auditory stream).
- In meteorology, atmospheric stratification is the division of the atmosphere into distinct layers, each with specific properties such as temperature or humidity.
- stratification (water) can occur due to gradients in salinity or temperature, e.g. lake stratification
- In histology, stratified epithelium refers to epithelium that consists of two or more layers of epithelial cells, in contrast to simple epithelium, which only has one layer.
- Medical
- Stratification of air- unmixed air within a confined space that is separated into thermal layers due to temperature variations.
See also: Destratification.
